#include <iostream>
#include <string>
#include <sstream>
#include <stdlib.h>
using namespace std;

int main()
{
	unsigned int largest = 0;
	string numbers;
	stringstream theStream;
	theStream << "73167176531330624919225119674426574742355349194934";
	theStream << "96983520312774506326239578318016984801869478851843";
	theStream << "85861560789112949495459501737958331952853208805511";
	theStream << "12540698747158523863050715693290963295227443043557";
	theStream << "66896648950445244523161731856403098711121722383113";
	theStream << "62229893423380308135336276614282806444486645238749";
	theStream << "30358907296290491560440772390713810515859307960866";
	theStream << "70172427121883998797908792274921901699720888093776";
	theStream << "65727333001053367881220235421809751254540594752243";
	theStream << "52584907711670556013604839586446706324415722155397";
	theStream << "53697817977846174064955149290862569321978468622482";
	theStream << "83972241375657056057490261407972968652414535100474";
	theStream << "82166370484403199890008895243450658541227588666881";
	theStream << "16427171479924442928230863465674813919123162824586";
	theStream << "17866458359124566529476545682848912883142607690042";
	theStream << "24219022671055626321111109370544217506941658960408";
	theStream << "07198403850962455444362981230987879927244284909188";
	theStream << "84580156166097919133875499200524063689912560717606";
	theStream << "05886116467109405077541002256983155200055935729725";
	theStream << "71636269561882670428252483600823257530420752963450";

	numbers = theStream.str().c_str();

	for (int num = 0; num < 996; ++num)
	{
		unsigned int product =	( numbers[num] - '0' ) *
								( numbers[num + 1]  - '0' ) *
								( numbers[num + 2]  - '0' ) *
								( numbers[num + 3]  - '0' ) *
								( numbers[num + 4] - '0' );

		if (product > largest)
		{
			largest = product;
		}
	}

	cout << "The largest is: " << largest << endl;
}